Scale up the drag drop offsets and surface size

The surface size and thumbCenterX/Y use app's coordinate space, which
need to be scaled up on the server side.

Bug: b/239478191
Test: atest DragDropTest DragDropCompatTest
Test: am compat enable DOWNSCALED com.android.dragsource
      am compat enable DOWNSCALE_30 com.android.dragsource
Change-Id: Id36caee8aa38885a95f8d237766ac968ef6c8f85

core/java/android/view/DragEvent.java

@@ -195,7 +195,7 @@ public class DragEvent implements Parcelable {
      * {@link #ACTION_DRAG_ENTERED} while the drag shadow is still within the View object's bounding
      * box, but not within a descendant view that can accept the data. The {@link #getX()} and
      * {@link #getY()} methods supply
-     * the X and Y position of of the drag point within the View object's bounding box.
+     * the X and Y position of the drag point within the View object's bounding box.
      * <p>
      * A View receives an {@link #ACTION_DRAG_ENTERED} event before receiving any
      * ACTION_DRAG_LOCATION events.

core/java/android/view/View.java

@@ -62,6 +62,7 @@ import android.content.Context;
 import android.content.ContextWrapper;
 import android.content.Intent;
 import android.content.res.ColorStateList;
+import android.content.res.CompatibilityInfo;
 import android.content.res.Configuration;
 import android.content.res.Resources;
 import android.content.res.TypedArray;
@@ -27546,6 +27547,11 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
                 || (shadowTouchPoint.x < 0) || (shadowTouchPoint.y < 0)) {
             throw new IllegalStateException("Drag shadow dimensions must not be negative");
         }
+        final float overrideInvScale = CompatibilityInfo.getOverrideInvertedScale();
+        if (overrideInvScale != 1f) {
+            shadowTouchPoint.x = (int) (shadowTouchPoint.x / overrideInvScale);
+            shadowTouchPoint.y = (int) (shadowTouchPoint.y / overrideInvScale);
+        }
 
         // Create 1x1 surface when zero surface size is specified because SurfaceControl.Builder
         // does not accept zero size surface.
@@ -27570,6 +27576,11 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
                 .setFormat(PixelFormat.TRANSLUCENT)
                 .setCallsite("View.startDragAndDrop")
                 .build();
+        if (overrideInvScale != 1f) {
+            final SurfaceControl.Transaction transaction = new SurfaceControl.Transaction();
+            transaction.setMatrix(surfaceControl, 1 / overrideInvScale, 0, 0, 1 / overrideInvScale)
+                    .apply();
+        }
         final Surface surface = new Surface();
         surface.copyFrom(surfaceControl);
         IBinder token = null;

services/core/java/com/android/server/wm/DragDropController.java

@@ -101,7 +101,8 @@ class DragDropController {
             float thumbCenterX, float thumbCenterY, ClipData data) {
         if (DEBUG_DRAG) {
             Slog.d(TAG_WM, "perform drag: win=" + window + " surface=" + surface + " flags=" +
-                            Integer.toHexString(flags) + " data=" + data);
+                    Integer.toHexString(flags) + " data=" + data + " touch(" + touchX + ","
+                    + touchY + ") thumb center(" + thumbCenterX + "," + thumbCenterY + ")");
         }
 
         final IBinder dragToken = new Binder();
@@ -156,6 +157,7 @@ class DragDropController {
                     mDragState.mPid = callerPid;
                     mDragState.mUid = callerUid;
                     mDragState.mOriginalAlpha = alpha;
+                    mDragState.mAnimatedScale = callingWin.mGlobalScale;
                     mDragState.mToken = dragToken;
                     mDragState.mDisplayContent = displayContent;
                     mDragState.mData = data;

services/core/java/com/android/server/wm/DragState.java

@@ -112,6 +112,7 @@ class DragState {
     int mTouchSource;
     boolean mDragResult;
     boolean mRelinquishDragSurfaceToDropTarget;
+    float mAnimatedScale = 1.0f;
     float mOriginalAlpha;
     float mOriginalX, mOriginalY;
     float mCurrentX, mCurrentY;
@@ -650,7 +651,8 @@ class DragState {
                 PropertyValuesHolder.ofFloat(
                         ANIMATED_PROPERTY_Y, mCurrentY - mThumbOffsetY,
                         mOriginalY - mThumbOffsetY),
-                PropertyValuesHolder.ofFloat(ANIMATED_PROPERTY_SCALE, 1, 1),
+                PropertyValuesHolder.ofFloat(ANIMATED_PROPERTY_SCALE, mAnimatedScale,
+                        mAnimatedScale),
                 PropertyValuesHolder.ofFloat(
                         ANIMATED_PROPERTY_ALPHA, mOriginalAlpha, mOriginalAlpha / 2));
 
@@ -678,7 +680,7 @@ class DragState {
                         ANIMATED_PROPERTY_X, mCurrentX - mThumbOffsetX, mCurrentX),
                 PropertyValuesHolder.ofFloat(
                         ANIMATED_PROPERTY_Y, mCurrentY - mThumbOffsetY, mCurrentY),
-                PropertyValuesHolder.ofFloat(ANIMATED_PROPERTY_SCALE, 1, 0),
+                PropertyValuesHolder.ofFloat(ANIMATED_PROPERTY_SCALE, mAnimatedScale, 0),
                 PropertyValuesHolder.ofFloat(ANIMATED_PROPERTY_ALPHA, mOriginalAlpha, 0));
         final AnimationListener listener = new AnimationListener();
         animator.setDuration(MIN_ANIMATION_DURATION_MS);